blin2000
asked on
How do you setup DNS for Windows SBS 2008
One of my clients has some issues such as slow logon and accessing Exchange. When I check the status of the DNS using nslook, it shows Default Server: UnKnown and it is use IPv6 IP as DNS as shown below. Should we setup IPv4 IP or IPv6 IP as primary DNS IP?
If using IPv6 as DNS IP is fine, how do yuo fix unknown default server?
Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.
C:\Users\BLin>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : CHICAGOTESERVER
Primary Dns Suffix . . . . . . . : chicagotechnet.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : chicagotechnet.local
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network Connection
Physical Address. . . . . . . . . : 00-50-56-B2-79-F4
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::a:e14a:c921:813%10(P
Link-local IPv6 Address . . . . . : fe80::de82:990d:6ea5:341%1
IPv4 Address. . . . . . . . . . . : 192.168.10.2(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.10.1
DNS Servers . . . . . . . . . . . : fe80::de82:990d:6ea5:341%1
192.168.10.2
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Local Area Connection* 8:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{FF368094-737F-4206
F39}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
C:\Users\BLin>nslookup
DNS request timed out.
timeout was 2 seconds.
Default Server: UnKnown
Address: fe80::de82:990d:6ea5:341
If using IPv6 as DNS IP is fine, how do yuo fix unknown default server?
Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.
C:\Users\BLin>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : CHICAGOTESERVER
Primary Dns Suffix . . . . . . . : chicagotechnet.local
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : chicagotechnet.local
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network Connection
Physical Address. . . . . . . . . : 00-50-56-B2-79-F4
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::a:e14a:c921:813%10(P
Link-local IPv6 Address . . . . . : fe80::de82:990d:6ea5:341%1
IPv4 Address. . . . . . . . . . . : 192.168.10.2(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.10.1
DNS Servers . . . . . . . . . . . : fe80::de82:990d:6ea5:341%1
192.168.10.2
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Local Area Connection* 8:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{FF368094-737F-4206
F39}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
C:\Users\BLin>nslookup
DNS request timed out.
timeout was 2 seconds.
Default Server: UnKnown
Address: fe80::de82:990d:6ea5:341
first set IPv4 parameters and then get back to ipv6
If your IPv4 Reverse Lookup Zones are mucked up, there are other problems.
Run the Fix My Network Wizard from the Network tab in the SBS Console.
Philip
Run the Fix My Network Wizard from the Network tab in the SBS Console.
Philip
Is DNS up and running on that box?
ASKER
Yes, the DNS is running and IPv4 Forward and reverse Lookup Zones have been setup. Why does the nslookup display Default Server: UnKnown. Is this by design?
nslookup
DNS request timed out.
timeout was 2 seconds.
Default Server: UnKnown
Address: fe80::de82:990d:6ea5:341
nslookup
DNS request timed out.
timeout was 2 seconds.
Default Server: UnKnown
Address: fe80::de82:990d:6ea5:341
ASKER
Fix My Network Wizard doesn'r see any errors.
For fun -- uncheck IPv6 from the nic, and see if things 'work'
If that resolves it, re-enable it. See if DNS is bound to your IPv6 addresses as well.
If that resolves it, re-enable it. See if DNS is bound to your IPv6 addresses as well.
Please do not disable IPv6. There will be no "fun" in what happens.
Philip
Philip
He can re-enable it, but it's a valid test to see if that's where the issue lies. We're troubleshooting. You have to rule things out.
That's what the Fix My Network Wizard is for on SBS 2008.
Philip
Philip
Ya, fix my network wizard didn't resolve the issue, he's tried that.
ASKER
Do me a favor. Could someone check his sbs nsllokup? I have two sbs, alll of them show:
Default Server: UnKnown
Address: fe80::de82:990d:6ea5:341
Is this normal? Can you post your result?
Default Server: UnKnown
Address: fe80::de82:990d:6ea5:341
Is this normal? Can you post your result?
ASKER CERTIFIED SOLUTION
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ASKER
I opened a case with Microsoft. Here is the answer: Troubleshooting SBS 2008 DNS issue - http://chicagotech.net/netforums/viewtopic.php?f=3&t=13718&sid=32afccfab4998e5f2ac90b68c249d51a
ASKER
ok
While IPv6 is left on, it is done so primarily for the internal communication purposes of the server components running in SBS 2008.
Philip